CN218064932U

CN218064932U - Special telescopic belt for corrosion prevention of desulfurization flue

Info

Publication number: CN218064932U
Application number: CN202121868383.6U
Authority: CN
Inventors: 李铁龙
Original assignee: Wuhan Longteng Huayu Environmental Protection Equipment Co ltd
Current assignee: Wuhan Longteng Huayu Environmental Protection Equipment Co ltd
Priority date: 2021-08-11
Filing date: 2021-08-11
Publication date: 2022-12-16
Anticipated expiration: 2031-08-11

Abstract

The utility model discloses an anticorrosive special telescopic band of desulfurization flue, including telescopic band main part and flue, the telescopic band main part is in the flue inboard, the telescopic band main part is the annular structure, and is equipped with the expansion joint in the telescopic band main part to the expansion joint both sides all are connected with corrosion resistant plate, be equipped with first fluorine rubberized fabric layer and second fluorine rubberized fabric layer on the expansion joint, and be equipped with anticorrosive polytetrafluoroethylene board and press from both sides the silk alkali-free glass fiber cloth between first fluorine rubberized fabric layer and the second fluorine rubberized fabric layer to all be connected with the nonmetal supporting layer between anticorrosive polytetrafluoroethylene board and the silk alkali-free glass fiber cloth. The metal part and the nonmetal part of the special telescopic belt for corrosion prevention of the desulfurization flue are integrally vulcanized and adhered together and reinforced by stainless steel rivets, the telescopic belt is not fixed by bolts, the complexity of bolt connection is reduced, and when the flue is rush-repaired, the telescopic belt only needs to pass through a stainless steel plate welding circle and can be arranged on the inner side of the flue without dismounting the original nonmetal expansion joint on the outer side of the flue and can adapt to the flues of various specifications.

Description

Special telescopic belt for corrosion prevention of desulfurization flue

Technical Field

The utility model relates to a nonmetal expansion joint technical field specifically is anticorrosive special telescopic band of desulfurization flue.

Background

The flue is a tubular device for discharging waste gas and smoke, and the residential flue is a vertical pipeline product for discharging kitchen smoke or waste gas in a toilet, and is also called as an exhaust duct, a ventilation duct and a residential exhaust duct. The desulfurization flue is a pipeline structure for discharging desulfurization flue gas, and an anticorrosive coating is arranged inside the desulfurization flue so as to prevent sulfide from corroding the flue.

The anticorrosive special telescopic band of current thermal power plant's desulfurization flue mainly comprises metal flange and nonmetal flexonics, form nonmetal expansion joint on the flange with the bolt fastening for the flexonics, be CN209325048U as the publication number discloses a self sealss structure that is used for nonmetal expansion joint of desulfurization flue, it is often great to point out the size of desulfurization flue, it is huge to the quantity that closes the bolt, cause the maintenance once can consume a large amount of manpower and materials, when maintaining the nonmetal expansion joint and changing the processing, traditional bolted connection is more loaded down with trivial details when dismantling and installing, overhaul the renewal period.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a special telescopic band of desulfurization flue is anticorrosive to solve the special telescopic band of desulfurization flue is anticorrosive on the existing market that above-mentioned background art provided and mainly constitute by metal flange and nonmetal flexible coupling, the bolt fastening forms nonmetal expansion joint on the flange for the flexible coupling, when maintaining the change processing to nonmetal expansion joint, traditional bolted connection is more loaded down with trivial details when dismantling and installing, overhauls the long problem of change period.

In order to achieve the above object, the utility model provides a following technical scheme: anticorrosive special telescopic band of desulfurization flue, including telescopic band main part and flue, the telescopic band main part is in the flue inboard, the telescopic band main part is the loop configuration, and is equipped with the expansion joint in the telescopic band main part to the expansion joint both sides all are connected with corrosion resistant plate, be equipped with first fluorine rubberized fabric layer and second fluorine rubberized fabric layer on the expansion joint, and be equipped with anticorrosive polytetrafluoroethylene board and press from both sides silk alkali-free glass fiber cloth between first fluorine rubberized fabric layer and the second fluorine rubberized fabric layer to all be connected with the nonmetal supporting layer between anticorrosive polytetrafluoroethylene board and the silk alkali-free glass fiber cloth.

Preferably, the stainless steel plate is adhered to the expansion joint through vulcanization, and rivets are uniformly arranged between the stainless steel plate and the expansion joint.

Preferably, the distance between the far ends of the two sides of the stainless steel plate is greater than the width of the expansion joint, and the stainless steel plate is connected with the flue in a welding mode.

Preferably, the cross section of the expansion joint is of an arc structure, and the arc of the expansion joint faces the outer side of the flue.

Preferably, the first fluorine rubber cloth layer, the anticorrosive polytetrafluoroethylene plate, the wired alkali-free glass fiber cloth, the second fluorine rubber cloth layer and the nonmetal supporting layer are integrally vulcanized and compounded in a seamless manner.

Compared with the prior art, the beneficial effects of the utility model are that: the metal part and the nonmetal part of this anticorrosive special telescopic band of desulfurization flue are whole to vulcanize and glue and be in the same place to reinforce with stainless steel rivet, not the bolt fastening, reduce bolted connection's loaded down with trivial details, it is convenient to change after improving, when salvageing the flue, only need with the telescopic band pass through corrosion resistant plate welding round can in the flue inboard, need not to dismantle the original nonmetal expansion joint in the flue outside, and the flue of adaptable multiple specification. The telescopic belt special for corrosion prevention of the desulfurization flue is formed by vulcanizing and compounding non-metallic materials such as a stainless steel plate, fluorine rubber cloth, a corrosion-resistant polytetrafluoroethylene plate, wire-clamping alkali-free glass fiber cloth and the like, does not need a fastener, is formed by integrally vulcanizing without seams, can bear displacement caused by positive pressure and negative pressure, and is harmless and free of leakage.

Drawings

FIG. 1 is a schematic view of the structure of the special telescopic belt for corrosion prevention of the desulfurization flue of the present invention;

FIG. 2 is an enlarged schematic view of the position A in the telescopic belt diagram 1 for the corrosion prevention of the desulfurization flue of the present invention;

fig. 3 is a side view of the special telescopic belt for corrosion prevention of the desulfurization flue of the utility model.

In the figure: 1. the expansion band comprises an expansion band body, 2 parts of a stainless steel plate, 3 parts of an expansion joint, 4 parts of a first fluorine adhesive fabric layer, 5 parts of an anticorrosive polytetrafluoroethylene plate, 6 parts of a wire-clamping alkali-free glass fiber cloth, 7 parts of a second fluorine adhesive fabric layer, 8 parts of a non-metal supporting layer, 9 parts of a flue.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the telescopic belt special for corrosion prevention of the desulfurization flue comprises a telescopic belt main body 1 and a flue 9, wherein the telescopic belt main body 1 is positioned on the inner side of the flue 9, the telescopic belt main body 1 is of an annular structure, an expansion joint 3 is arranged on the telescopic belt main body 1, the cross section of the expansion joint 3 is of an arc-shaped structure, and the arc of the expansion joint 3 faces the outer side of the flue 9, the structure can ensure that the telescopic belt main body 1 is welded and fixed on the inner side of the flue 9 through a stainless steel plate 2, the expansion joint 3 avoids the position of a channel on the inner side of the flue 9 through the arc-shaped structure, the expansion joint 3 is prevented from being influenced by flue gas, meanwhile, the expansion joint 3 can play a pressure bearing role, the stainless steel plates 2 are connected to two sides of the expansion joint 3, the stainless steel plates 2 are connected with the expansion joint 3 through vulcanization, rivets are uniformly arranged between the stainless steel plates 2 and the expansion joint 3, and the stainless steel plates 2 are fixed with the expansion joint 3 through vulcanization adhesion, the telescopic belt is characterized in that the telescopic belt is composed of a telescopic belt main body 1, a stainless steel plate 2, a flue 9, a first fluorine adhesive cloth layer 4 and a second fluorine adhesive cloth layer 7, wherein the telescopic belt main body 1 can be welded on the inner side of the flue 9 through areas on two sides of the stainless steel plate 2, when the flue 9 is salvageed, the telescopic belt main body 1 can be directly fixed in the flue 9 without dismantling an original nonmetal expansion joint on the outer side of the flue 9, the overhaul efficiency is improved, the expansion joint 3 is provided with the first fluorine adhesive cloth layer 4 and the second fluorine adhesive cloth layer 7, an anticorrosive polytetrafluoroethylene plate 5 and a wired alkali-free glass fiber cloth 6 are arranged between the first fluorine adhesive cloth layer 4 and the second fluorine adhesive cloth layer 7, a nonmetal supporting layer 8 is connected between the anticorrosive polytetrafluoroethylene plate 5 and the wired alkali-free glass fiber cloth 6, the first fluorine adhesive cloth layer 4, anticorrosive polytetrafluoroethylene board 5, press from both sides silk alkali-free glass fiber cloth 6, no seam whole vulcanization complex forms between second fluorine rubberized fabric layer 7 and the nonmetal supporting layer 8, this structure makes the expansion joint 3 whole through vulcanizing the compound connection, need not to consolidate through the fastener, let telescopic band main part 1 can bear the displacement that positive pressure and negative pressure that probably take place produced through flexible coupling expansion joint 3, no harm, no leakage, the operation standard of compound telescopic band main part 1, the fluorine rubberized fabric that first fluorine rubberized fabric layer 4 and second fluorine rubberized fabric layer 7 adopted is high temperature resistant, corrosion-resistant fluorine-containing polymer elastomer, form compound adhesive tape through coating with clamp silk alkali-free glass fiber cloth 6, nonmetal supporting layer 8 provides the partition processing for anticorrosive polytetrafluoroethylene board 5 and clamp silk alkali-free glass fiber cloth 6, telescopic band main part 1 can be applicable to the clean flue of desulfurization system needs the position of expansion joint 3, suitable temperature is within 200 degrees, it is corrosive flue gas to be suitable for the flue gas medium.

The working principle is as follows: when using this anticorrosive special telescopic band of desulfurization flue, at first flue 9 when former nonmetal expansion joint breaks down, make telescopic band main part 1 pass through corrosion resistant plate 2 welded fastening to flue 9 need install the position of expansion joint 3, it is compound to vulcanize between corrosion resistant plate 2 and the expansion joint 3, effectively alleviate bolt fastening's loaded down with trivial details, the flexible coupling that the expansion joint 3 constitutes is by first fluorine rubberized fabric layer 4, anticorrosive polytetrafluoroethylene board 5, the fine 6 of the alkali-free glass of clamp silk, second fluorine rubberized fabric layer 7 and the whole seamless vulcanization of nonmetal supporting layer 8 form, need not the fastener, can bear the displacement that positive pressure and negative pressure that probably take place produced, and is harmless, and is leakless, accords with the experimental specification of telescopic band main part 1, thereby accomplish a series of works.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. Anticorrosive special telescopic band of desulfurization flue, including telescopic band main part (1) and flue (9), telescopic band main part (1) is in flue (9) inboard, its characterized in that: the telescopic belt is characterized in that the telescopic belt body (1) is of an annular structure, expansion joints (3) are arranged on the telescopic belt body (1), stainless steel plates (2) are connected to two sides of each expansion joint (3), a first fluorine rubber cloth layer (4) and a second fluorine rubber cloth layer (7) are arranged on each expansion joint (3), an anticorrosive polytetrafluoroethylene plate (5) and a wire-clamping alkali-free glass fiber cloth (6) are arranged between each first fluorine rubber cloth layer (4) and each second fluorine rubber cloth layer (7), and a nonmetal supporting layer (8) is connected between each anticorrosive polytetrafluoroethylene plate (5) and the wire-clamping alkali-free glass fiber cloth (6).

2. The telescopic band special for corrosion prevention of the desulfurization flue as claimed in claim 1, characterized in that: the stainless steel plate (2) is adhered to the expansion joint (3) through vulcanization, and rivets are uniformly arranged between the stainless steel plate (2) and the expansion joint (3).

3. The telescopic band special for corrosion prevention of a desulfurization flue according to claim 1, characterized in that: the distance between the far ends of the two sides of the stainless steel plate (2) is larger than the width of the expansion joint (3), and the stainless steel plate (2) is connected with the flue (9) in a welding mode.

4. The telescopic band special for corrosion prevention of a desulfurization flue according to claim 1, characterized in that: the cross section of the expansion joint (3) is of an arc structure, and the arc of the expansion joint (3) faces the outer side of the flue (9).

5. The telescopic band special for corrosion prevention of the desulfurization flue as claimed in claim 1, characterized in that: the first fluorine rubber cloth layer (4), the anticorrosive polytetrafluoroethylene plate (5), the wire-clamping alkali-free glass fiber cloth (6), the second fluorine rubber cloth layer (7) and the non-metal supporting layer (8) are integrally vulcanized and compounded without seams.